Whew. Apparently the win32clipboard
library does simplify some things when compared to ctypes
. Your attempt to simply replace one with the other is far from correct.
So I booted up my Windows virtual machine, installed Pillow and rewrote your program, learning from two other answers:
import io
import ctypes
msvcrt = ctypes.cdll.msvcrt
kernel32 = ctypes.windll.kernel32
user32 = ctypes.windll.user32
from PIL import ImageGrab
img = ImageGrab.grab()
output = io.BytesIO()
img.convert('RGB').save(output, 'BMP')
data = output.getvalue()[14:]
output.close()
CF_DIB = 8
GMEM_MOVEABLE = 0x0002
global_mem = kernel32.GlobalAlloc(GMEM_MOVEABLE, len(data))
global_data = kernel32.GlobalLock(global_mem)
msvcrt.memcpy(ctypes.c_char_p(global_data), data, len(data))
kernel32.GlobalUnlock(global_mem)
user32.OpenClipboard(None)
user32.EmptyClipboard()
user32.SetClipboardData(CF_DIB, global_mem)
user32.CloseClipboard()